Safety Officer Posted February 28, 2015 Report Share Posted February 28, 2015 Read page 2 of SB-912-067 - SB-914-048. If your floats fall within the parameters listed on page 2 of the SB they get replaced whether they are bad right this minute or not. Tell them to read page two also. It is all floats within a certain time period and or serial number because there would be no way to tell if or when a float from this casting series would go bad.1.1) ApplicabilityAll engines of Series 912 A, 912 F, 912 S and 914 F are affected, if at least one of followingcriteria applies:Criterion A) Engine Serial number:Criterion Carburetors:The part numbers and serial numbers of the carburetors:Criterion C) Spare parts:Further all engines are affected, which have been equipped during engine repair, maintenanceor general overhaul as of July 01, 2012 with floats with the part no. 861184, whichhave not been marked (see page 7, chapter 3.3).NOTE: The carburetor and/or the float may have been removed from the initialengine and used on another one.Engines and/or carburetors with serial numbers higher than in criterion Aor B have already been equipped with tested floats. To provide traceabilitythe floats were marked as described in section 3.3.For relevant information, see the maintenance records and/or the logbook.1.2) Concurrent ASB/SB/SI and SLIn addition to this Service Bulletin the following Service Instruction must be observed andcomplied with:- Service Instruction-SI-912-021/SI-914-023, „Inspection of carburetors“, current issue.Engine type Serial number912 A From S/N 4 410 957 up to S/N 4 411 048 inclusive912 F From S/N 4 413 008 up to S/N 4 413 041 inclusive912 S From S/N 4 924 408 up to S/N 4 924 838 inclusive914 F From S/N 4 421 136 up to S/N 4 421 403 inclusiveCarburetors Serial number912 A/F 1/3 part no. 892500 - from S/N 116434 up to S/N 144101 inclusive2/4 part no. 892505 - from S/N 115846 up to S/N 143886 inclusive912 S 1/3 part no. 892530 - from S/N 121087 up to S/N 143702 inclusive2/4 part no. 892535 - from S/N 120980 up to S/N 143505 inclusive914 F 1/4 part no. 892520 - from S/N 116207 up to S/N 143799 inclusive2/4 part no. 892525 - from S/N 120228 up to S/N 143310 inclusive and 1.1) Applicability All engines of Series 912 UL, 912 ULS and 914 UL are affected, if at least one of following criteria applies: Criterion A) Engine Serial number: Criterion Carburetors: The part numbers and serial numbers of the carburetors: Criterion C) Spare parts: Further all engines are affected, which have been equipped during engine repair, maintenance or general overhaul as of July 01, 2012 with floats with the part no. 861184, which have not been marked (see Service Bulletin SB-912-067/SB-914-048, latest revision, chapter 3.3, page 7). NOTE: The carburetor and/or the float may have been removed from the initial engine and used on another one. Engines and/or carburetors with S/N higher than mentioned in criterion A or B have already been equipped with tested floats. To provide traceability these floats were marked as described in section 3.3 (refer to Service Bulletin SB-912-067/SB-914-048, latest revision). For relevant information, see the maintenance records and/or the logbook. For complete instructions and compliance to this Service Bulletin refer to Service BulletinSB-912-067/SB-914-048, latest revision, section 1.2 onwards. NOTE: Section 1.6) Approval: Is not required for engines of type UL (Series). Section 3) Accomplishment: In addition, persons with adequate typespecific training can perform the work. Engine type Serial number 912 UL from S/N 6 770 733 up to S/N 6 771 484 inclusive 912 ULS from S/N 6 780 228 up to S/N 6 783 917 inclusive 914 UL from S/N 7 682 154 up to S/N 7 683 662 inclusive Carburetors Serial number 912 UL 1/3 part no. 892500 - from S/N 116434 up to S/N 144101 inclusive 2/4 part no. 892505 - from S/N 115846 up to S/N 143886 inclusive 912 ULS 1/3 part no. 892530 - from S/N 121087 up to S/N 143702 inclusive 2/4 part no. 892535 - from S/N 120980 up to S/N 143505 inclusive 914 UL 1/4 part no. 892520 - from S/N 116207 up to S/N 143799 inclusive 2/4 part no. 892525 - from S/N 120228 up to S/N 143310 inclusive Link to comment Share on other sites More sharing options...
Rich Posted February 28, 2015 Report Share Posted February 28, 2015 Good afternoon, 912 ULS. Although my engine serial # was above the range of affected engines, I removed my floats to check the condition and found one float badly pitted and worn through the first layer of material on the upper left side. I posted the pix on this site. It's worth the time to check you floats as the above testifies. Does Rotax replace these affected floats at their cost? Link to comment Share on other sites More sharing options...
Roger Lee Posted February 28, 2015 Report Share Posted February 28, 2015 Does Rotax replace these affected floats at their cost? yes and they will pay .75 labor cost if you are in the affected range. The outer coating is not a sealing surface as we think of it. It is the thousands of micro bubbles that the float consist of. These are what is wrong with the bad floats. The micro bubbles are corrupt and they allow fuel to slowly creep in. If the floats aren't sinking and the outside layer is not flaking off then I wouldn't worry until a problem arises because it may never materialize. Link to comment Share on other sites More sharing options...
WmInce Posted February 28, 2015 Report Share Posted February 28, 2015 Does Rotax replace these affected floats at their cost? yes and they will pay .75 labor cost if you are in the affected range. Roger, in the event we need to show it, where is that published? Link to comment Share on other sites More sharing options...
Roger Lee Posted February 28, 2015 Report Share Posted February 28, 2015 It's in the bulletins and you can verify it with CPS. Link to comment Share on other sites More sharing options...
FredG Posted February 28, 2015 Report Share Posted February 28, 2015 Not finding much on replacement floats at CPS, LEAF, or Lockwood websites. Wonder if Rotax mentioned it to them. Link to comment Share on other sites More sharing options...
Roger Lee Posted February 28, 2015 Report Share Posted February 28, 2015 The bulletin says they will replace your affected floats. Any bodies best guess to when they will come in. There is a line at each distributor waiting for these. Link to comment Share on other sites More sharing options...
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